CN105731587A - Method for reducing hexavalent chromium through micromolecular diketone-ultraviolet light - Google Patents
Method for reducing hexavalent chromium through micromolecular diketone-ultraviolet light Download PDFInfo
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- CN105731587A CN105731587A CN201610090531.3A CN201610090531A CN105731587A CN 105731587 A CN105731587 A CN 105731587A CN 201610090531 A CN201610090531 A CN 201610090531A CN 105731587 A CN105731587 A CN 105731587A
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- diketone
- hexavalent chromium
- ultraviolet light
- chromic
- chromium
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- 238000000034 method Methods 0.000 title claims abstract description 30
- JOPOVCBBYLSVDA-UHFFFAOYSA-N chromium(6+) Chemical compound [Cr+6] JOPOVCBBYLSVDA-UHFFFAOYSA-N 0.000 title abstract description 11
- 239000011651 chromium Substances 0.000 claims abstract description 56
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 24
- 125000005594 diketone group Chemical group 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 20
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 16
- 230000009467 reduction Effects 0.000 claims description 36
- YRKCREAYFQTBPV-UHFFFAOYSA-N acetylacetone Chemical compound CC(=O)CC(C)=O YRKCREAYFQTBPV-UHFFFAOYSA-N 0.000 claims description 14
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 abstract description 14
- 238000006243 chemical reaction Methods 0.000 abstract description 13
- 150000002500 ions Chemical class 0.000 abstract description 3
- 239000010842 industrial wastewater Substances 0.000 abstract description 2
- 230000001988 toxicity Effects 0.000 abstract description 2
- 231100000419 toxicity Toxicity 0.000 abstract description 2
- 238000000053 physical method Methods 0.000 abstract 1
- 230000001105 regulatory effect Effects 0.000 abstract 1
- 238000006722 reduction reaction Methods 0.000 description 32
- 230000000694 effects Effects 0.000 description 12
- 238000005286 illumination Methods 0.000 description 11
- 238000007540 photo-reduction reaction Methods 0.000 description 10
- 239000000243 solution Substances 0.000 description 9
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 8
- 229910052753 mercury Inorganic materials 0.000 description 8
- 238000010586 diagram Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 239000002351 wastewater Substances 0.000 description 6
- 239000000975 dye Substances 0.000 description 5
- 150000001450 anions Chemical class 0.000 description 4
- 230000008859 change Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 238000001556 precipitation Methods 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- -1 has UV/TiO2Deng Chemical compound 0.000 description 3
- 238000009863 impact test Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000000376 reactant Substances 0.000 description 3
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 3
- LSNNMFCWUKXFEE-UHFFFAOYSA-L sulfite Chemical compound [O-]S([O-])=O LSNNMFCWUKXFEE-UHFFFAOYSA-L 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 2
- 239000003513 alkali Substances 0.000 description 2
- 150000001768 cations Chemical class 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 150000002576 ketones Chemical class 0.000 description 2
- VLTRZXGMWDSKGL-UHFFFAOYSA-N perchloric acid Chemical compound OCl(=O)(=O)=O VLTRZXGMWDSKGL-UHFFFAOYSA-N 0.000 description 2
- 231100000614 poison Toxicity 0.000 description 2
- KMUONIBRACKNSN-UHFFFAOYSA-N potassium dichromate Chemical compound [K+].[K+].[O-][Cr](=O)(=O)O[Cr]([O-])(=O)=O KMUONIBRACKNSN-UHFFFAOYSA-N 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- CWYNVVGOOAEACU-UHFFFAOYSA-N Fe2+ Chemical compound [Fe+2] CWYNVVGOOAEACU-UHFFFAOYSA-N 0.000 description 1
- YZCKVEUIGOORGS-UHFFFAOYSA-N Hydrogen atom Chemical compound [H] YZCKVEUIGOORGS-UHFFFAOYSA-N 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- ZCDOYSPFYFSLEW-UHFFFAOYSA-N chromate(2-) Chemical compound [O-][Cr]([O-])(=O)=O ZCDOYSPFYFSLEW-UHFFFAOYSA-N 0.000 description 1
- 150000001845 chromium compounds Chemical class 0.000 description 1
- 239000000356 contaminant Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000009395 genetic defect Effects 0.000 description 1
- 229910001385 heavy metal Inorganic materials 0.000 description 1
- 238000007210 heterogeneous catalysis Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 1
- 210000003127 knee Anatomy 0.000 description 1
- 230000002045 lasting effect Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005272 metallurgy Methods 0.000 description 1
- 230000029052 metamorphosis Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 238000011017 operating method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000007146 photocatalysis Methods 0.000 description 1
- 230000001699 photocatalysis Effects 0.000 description 1
- 239000000049 pigment Substances 0.000 description 1
- 239000002574 poison Substances 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000011112 process operation Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 230000027756 respiratory electron transport chain Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000004753 textile Substances 0.000 description 1
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 229910021642 ultra pure water Inorganic materials 0.000 description 1
- 239000012498 ultrapure water Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 239000003403 water pollutant Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/30—Treatment of water, waste water, or sewage by irradiation
- C02F1/32—Treatment of water, waste water, or sewage by irradiation with ultraviolet light
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/70—Treatment of water, waste water, or sewage by reduction
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/20—Heavy metals or heavy metal compounds
- C02F2101/22—Chromium or chromium compounds, e.g. chromates
-
- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2305/00—Use of specific compounds during water treatment
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Engineering & Computer Science (AREA)
- Environmental & Geological Engineering (AREA)
- Water Supply & Treatment (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physical Water Treatments (AREA)
- Treatment Of Water By Oxidation Or Reduction (AREA)
Abstract
The invention discloses a method for reducing hexavalent chromium through micromolecular diketone-ultraviolet light. According to the method, micromolecular diketone with the final concentration of 0.1-1 mM is put in water containing hexavalent chromium, the pH of the solution is regulated to be 3-6, the solution is placed under an ultraviolet light source for irradiation, and then hexavalent chromium in the water can be reduced into trivalent chromium. According to the UV/micromolecular diketone system established through the method, hexavalent chromium in the water can be quickly reduced into trivalent chromium which is low in toxicity and easier to remove through a physical method; the reaction conforms to the zero order kinetics, and the removal rate of hexavalent chromium is tens of that obtained through a UV/TiO2 method; a homogeneous reaction is performed in the method, operation is simple and convenient, and compared with the UV/TiO2 method and the like, the solution pH applicable range is broader, and the method is little affected by co-existing ions in the solution and can be widely applied to treatment of industrial wastewater containing hexavalent chromium.
Description
Technical field
The present invention relates to water treatment field, particularly one utilizes little molecule diketone-ultraviolet light reduction treatment chromic
Method.
Background technology
Chromium is a kind of important metallic element, has the characteristics such as matter is hard, wear-resisting, high temperature resistant, anticorrosive, metallurgy, chemical industry,
Mineral engineering, electroplate, chromium processed, pigment, pharmacy, industry light industry textile industry, chromic salts and chromium compounds production in have and be widely used.At chromium
A large amount of chromate waste water can be produced during production, use, endanger Environmental security.Chromium in water is mainly with sexavalence (Cr (VI)) and three
Valency (Cr (III)) form exists, and the most chromic toxicity is very big, is chromic tens of to hundreds times, and contact skin may
Cause inherited genetic defects, suction to be potentially carcinogenic, environment is had lasting danger.In view of chromic harm, U.S. environment
Cr VI is set to one of 17 kinds of highly dangerous poisonous substances by protection office (EPA), also by Cr VI in China's industrial wastewater discharge standard
It is classified as first kind pollutant, is one of the five big heavy metal contaminants that control of state key.According to China's integrated wastewater discharge mark
Quasi-GB 8978-1996, for producing the industry of chrome waste water, it is desirable to the content of 6-valence Cr ions in plant emissions sewage must not be higher than
0.5 mg/L。
Chromic polluter is complicated, and in transition process, metamorphosis is various, how with CrO4 2-、Cr2O7 2-Form exists, and lacks
Weary effectively preventing technology, and Cr (III) can be removed by easy means such as alkali precipitations.Therefore, Cr (VI) is reduced to poison
Property low, be easier to the Cr (III) that removes, Cr in water (VI) final is removed significant.
Photo chemistry technology has preferable effect in terms of processing water pollutant.Utilizing photoreduction Cr VI is three
The technology of valency chromium mainly has UV/TiO2Deng, its principle is photocatalysis TiO2Hexavalent chrome reduction is three by the electronics producing reproducibility
Valency chromium, then regulation pH is to neutral and alkali, is removed by precipitation by chromium.But due to TiO2For heterogeneous catalysis, the later stage separates back
Bring drill to an end and cause the inconvenience of process operation.Additionally, have been reported that use sulphite (Na2SO3) produce hydration electricity under ultraviolet light
Son, is trivalent chromium by hexavalent chrome reduction.But the stable operation of sulphite system requires harshness to reaction condition: need to expose nitrogen and remove
Oxygen, and aqueous electron production affected relatively big by the pH of aqueous solution, narrow application range.
The Chinese patent of Patent No. ZL 201110419706.8 discloses a kind of based on UV/ acetylacetone,2,4-pentanedione (2,4-penta 2
Ketone, AA) method that processes waste water from dyestuff, the Chinese patent of Patent No. ZL 201210141846.8 then discloses a kind of utilization
The method that two kinds little molecule diketones (2,3-diacetyl, BD, or 2,5-acetyl butyryl, HD) process waste water from dyestuff as optical active matter.
As can be seen here, little molecule diketone, including AA, BD, HD, there is photochemical activity, it is possible to efficient decolorizing waste water from dyestuff.Further
Research finds, the principle of AA efficient decolorizing dyestuff is photic formation dyestuff-AA exciplex, electronics and energy can directly occur
Amount transfer.But chromic structure and chemical property are completely different with dye class Organic substance, can it with little molecule diketone shape
Becoming light to swash complex, concurrently to give birth to photo induced electron transfer on the knees of the gods.At present, there are no and utilize UV/ little molecule diketone method (UV/
Diketone) the method report of Cr (VI) in reduction treatment water.
Summary of the invention
For the problems referred to above, the invention provides one and utilize little molecule diketone photo-reduction to process chromic side in water
Method, it is possible to be trivalent chromium by the hexavalent chrome reduction in water fast and efficiently, it is simple to later stage precipitation process, the present invention is such reality
Existing:
One utilizes little molecule diketone-chromic method of ultraviolet light reduction treatment, and it specifically comprises the following steps that
(A) to containing chromic water body adds little molecule diketone extremely final concentration of 0.1-1 mM；
(B) step (A) water body is placed under ultraviolet source, with 0.6-5 mW/cm2Light intensity irradiation 60 min, can be by water
Hexavalent chrome reduction in body is trivalent chromium;Described ultraviolet source is medium pressure mercury lamp or low pressure mercury lamp.
Further, the present invention utilizes in little molecule diketone-chromic method of ultraviolet light reduction treatment, and described little molecule is double
Ketone be acetylacetone,2,4-pentanedione, 2,3-diacetyl or 2, the one in 5-acetyl butyryl.
Further, the present invention utilizes in little molecule diketone-chromic method of ultraviolet light reduction treatment, step (A) water body
In chromic concentration be 1-20 mg/L.
The beneficial effects of the present invention is, utilize little molecule diketone-ultraviolet light (UV/diketone) body that the present invention sets up
System, can be the trivalent chromium being more easy to remove by the hexavalent chrome reduction in water rapidly, in order to further Physical precipitation removal.This light is also
The speed of former method is UV/TiO2The decades of times of system, is UV/SO3 2-The several times of system；Additionally, the UV/ of the present invention
Diketone system is homogeneous reaction, simple to operate, is suitable for pH value of solution scope wide, can be widely applied to the Industry Waste containing Cr (VI)
The reduction treatment of water, has higher prospects for commercial application.
Accompanying drawing explanation
Fig. 1 is Cr (VI) concentration change schematic diagram in the reduction treatment of embodiment UV/diketone.
Fig. 2 is that in the reduction treatment of embodiment UV/AA, different initial concentrations affect schematic diagram to Cr (VI) concentration.
Fig. 3 is that in the reduction treatment of embodiment UV/AA, different initial pH affect schematic diagram to Cr (VI) concentration.
Fig. 4 be in UV/AA reduction treatment pH value of solution with the change schematic diagram of light application time.
Fig. 5 is that in the reduction treatment of embodiment UV/AA, different anions affects schematic diagram to Cr (VI) concentration.
Fig. 6 is that in the reduction treatment of embodiment UV/AA, different cationes affect schematic diagram to Cr (VI) concentration.
Fig. 7 is that embodiment UV/AA reduction treatment mesolow mercury lamp is to Cr (VI) concentration change schematic diagram.
Detailed description of the invention
Embodiment relates to reagent collocation method/source:
Cr (VI) storing solution: weigh the potassium dichromate of 2.83 g in the ultra-pure water of 1 L, be formulated as Cr (VI) deposit of 1 g/L
Liquid.
Little molecule diketone AA(2,4-pentanedione), BD(2,3-diacetyl), HD(2,5-acetyl butyryl) all purchase in Nanjing
Learn chemical reagent work.
Cr (VI) reduction effect is tested by embodiment 1 UV/diketone
Cr (VI) storing solution is added in some 25 mL color comparison tubes, is then respectively adding little molecule diketone AA, BD, HD, Na2SO3
And TiO2, by Cr (VI) final concentration, (unit is with K2CrO7Middle Cr (VI) counts)) it is diluted to be 20 mg/L, and medium and small point of color comparison tube
Sub-diketone AA, BD, HD, and reducing agent Na2SO3Final concentration be 1.0 mM, TiO2Final concentration of 1g/L, be subsequently poured into light
In the reaction tube of 25 mL of reaction unit.
The implementation case is used to carry out photochemistry device with shown in patent CN102491450B Figure of description 1,2, instrument
Device operating procedure is identical with this patent Example 1.
The present embodiment uses 300 W medium pressure mercury lamps, and at reactant liquor, light intensity is 5 mW/cm2, photoirradiation reacts 60 min, often
Sampling one-time detection Cr (VI) concentration every 10 min, testing result is as shown in Figure 1.
As shown in Figure 1, under equal conditions, different photochemical process reduction effect chromic to 20mg/L size orders
For: UV/AA > UV/BD > UV/HD > UV/Na2SO3 > UV/TiO2> UV.UV/AA can be at 60 min by 20 mg/L's
Cr (VI) reduces 92%, UV/TiO2Can only reduce 15%, and UV/diketone is UV/TiO to the rate of reduction of Cr (VI)25-
12 times.As can be seen here, UV/diketone be a kind of efficient photo-reduction Cr (VI) be chromic a kind of photochemical method.
The different initial concentration Cr (VI) of embodiment 2 is on the impact test of UV/AA removing rates
The present embodiment illumination apparatus and illumination condition are with case study on implementation 1, but in color comparison tube, added hexavalent chromium concentration is 12-18
Mg/L, AA concentration is 0.1 mM, and reaction result is as shown in Figure 2.
From Fig. 2 photo-reduction effect, AA concentration one timing, Cr (VI) concentration is the lowest, and photo-reduction is taken by trivalent chromium
Between the shortest, can complete within half an hour Cr (VI) 100% reduction, but under variable concentrations Cr (VI) photo-reduction speed change
Less, i.e. UV/AA is respectively provided with preferable reduction effect to the Cr (VI) of different initial concentrations.
The different initial pH of embodiment 3 is on the impact test of UV/AA removing rates
The present embodiment illumination apparatus and illumination condition are with case study on implementation 1, but added Cr (VI) concentration is 20 mg/L, AA concentration
It is 0.1 mM, additionally, be followed successively by 3.1,4.1,5.0 and 6.1 with perchloric acid and sodium hydrate regulator solution pH, reaction result such as 3
Shown in.
From the figure 3, it may be seen that under middle acid condition, UV/AA has photo-reduction effect faster, and reduction effect to Cr VI
Rate is affected less by pH, and, along with the carrying out of illumination reaction, the pH in solution gradually rises, pH value of solution ratio after UV 60 min
Initial pH height 1-2(is as shown in Figure 4), the hydrion in solution, solution can be consumed during this explanation UV/AA photo-reduction Cr VI
The rising of pH also provides advantage for chromic removal.
The different counter anion of embodiment 4 is on the impact test of UV/AA removing rates
The present embodiment illumination apparatus and illumination condition are with case study on implementation 1, but added hexavalent chromium concentration is 20 mg/L, AA concentration
It is 0.1 mM, adds final concentration respectively and be the anion salt ClO of 0.4 mM4 -、Cl-、SO4 2-And NO3 -, arrange simultaneously and be not added with the moon
Ion salt is as blank (control), and reaction result is as shown in Figure 5.
As shown in Figure 5, common in water anion is less on the reaction impact of UV/AA photo-reduction Cr VI.
In embodiment 5 UV/AA reduction, difference coexists cation to treatment effect impact
Embodiment illumination apparatus and illumination condition are with case study on implementation 1, but added hexavalent chromium concentration is 20 mg/L, and AA concentration is
0.1 mM, adds final concentration respectively and is cation Fe of 0.04 mM2+、Fe3+、Cu2+、Mg2+And Ca2+, arrange simultaneously and be not added with sun
Ion salt is as blank (control), and reaction result is as shown in Figure 6.
It will be appreciated from fig. 6 that in addition to ferrous iron has less facilitation (rate of reduction is 1.15 times compareed), remaining is positive
The impact of ion pair UV/AA photo-reduction Cr VI is less.
Embodiment 6 UV/AA reduction mesolow mercury lamp is to hexavalent chrome reduction effect
Illumination apparatus and illumination condition are with case study on implementation 1, but added hexavalent chromium concentration is 1.2 mg/L, and AA concentration is 0.4
MM, the light source used is 10 W low pressure mercury lamps, and the light intensity at reactant liquor is 0.6 mW/cm2, reaction result is as shown in Figure 7.
As shown in Figure 7, under low pressure mercury lamp, AA and BD also has advantageous reduction effect to Cr VI, reduction efficiency up to
100%.By changing the wattage using mercury lamp so that light intensity residing for reactant liquor is at 0.6-5 mW/cm2Between, UV/ diketone is to six
Valency chromium all has certain reduction effect.
Embodiment described above only have expressed embodiments of the present invention, and it describes more concrete and detailed, but can not
Therefore the restriction to the scope of the claims of the present invention it is interpreted as.It should be pointed out that, to those skilled in the art, do not taking off
On the premise of present inventive concept, it is also possible to make some improvement, these improvement broadly fall into protection scope of the present invention.
Claims (3)
1. one kind utilizes little molecule diketone-chromic method of ultraviolet light reduction treatment, it is characterised in that specifically comprise the following steps that
To containing chromic water body adds little molecule diketone extremely final concentration of 0.1-1mM；
By step A) water body is placed under ultraviolet source, with 0.6-5 mW/cm2Light intensity irradiation 20-60 min, can be by water body
In hexavalent chrome reduction be trivalent chromium.
One the most according to claim 1 utilizes little molecule diketone-chromic method of ultraviolet light reduction treatment, its feature
Be, described little molecule diketone be acetylacetone,2,4-pentanedione, 2,3-diacetyl or 2, the one in 5-acetyl butyryl.
Kind the most according to claim 1 and 2 utilizes little molecule diketone-chromic method of ultraviolet light reduction treatment, and it is special
Levy and be, step A) chromic concentration is 1-20 mg/L in water body.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510949579 | 2015-12-18 | ||
| CN2015109495790 | 2015-12-18 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106423272A (en) * | 2016-09-28 | 2017-02-22 | 中南林业科技大学 | Supported titanium dioxide/graphene oxide pellets and preparation method and application thereof |
| CN109956519A (en) * | 2019-04-21 | 2019-07-02 | 贵州大学 | A kind of method that Cr VI and organic phenolic comp ' ds pollution in water removal are removed in photochemistry collaboration |
| CN110395700A (en) * | 2019-07-29 | 2019-11-01 | 南京大学 | A kind of method of photochemistry preparation nanometer selenium |
| CN112794491A (en) * | 2020-12-10 | 2021-05-14 | 西南兵工重庆环境保护研究所有限公司 | Combined water treatment process for removing hexavalent chromium in wastewater |
| CN113351876A (en) * | 2021-04-21 | 2021-09-07 | 南京大学 | Method for preparing water-soluble nano gold |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071477A (en) * | 2001-08-30 | 2003-03-11 | Mitsubishi Heavy Ind Ltd | Hazardous substance treatment method, its apparatus, and wastewater treatment system |
| US20110220577A1 (en) * | 2010-03-12 | 2011-09-15 | Council Of Scientific & Industrial Research | Process for the removal of arsenic and chromium from water |
| CN102491450A (en) * | 2011-12-15 | 2012-06-13 | 南京大学 | Method for treating dye waste water by using ultraviolet-acetylacetone oxidation treatment process |
| CN102502916A (en) * | 2011-10-28 | 2012-06-20 | 中国科学院过程工程研究所 | Method for photo-reduction of hexavalent chromium |
| CN102642890A (en) * | 2012-05-09 | 2012-08-22 | 南京大学 | Method utilizing small-molecule diketone to serve as optical active agent for oxidation treatment of dye waste water |
| CN103818986A (en) * | 2014-02-14 | 2014-05-28 | 浙江工商大学 | Photocatalytic electrode responding to visible lights and application thereof on chromium-containing wastewater treatment |
| CN104709996A (en) * | 2015-04-07 | 2015-06-17 | 武汉大学 | Method for simultaneously treating hexavalent chrome wastewater and organic dye wastewater |
| CN105417620A (en) * | 2015-12-18 | 2016-03-23 | 南京大学 | Method for degrading dye wastewater by using sunlight |
-
2016
- 2016-02-18 CN CN201610090531.3A patent/CN105731587B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003071477A (en) * | 2001-08-30 | 2003-03-11 | Mitsubishi Heavy Ind Ltd | Hazardous substance treatment method, its apparatus, and wastewater treatment system |
| US20110220577A1 (en) * | 2010-03-12 | 2011-09-15 | Council Of Scientific & Industrial Research | Process for the removal of arsenic and chromium from water |
| CN102502916A (en) * | 2011-10-28 | 2012-06-20 | 中国科学院过程工程研究所 | Method for photo-reduction of hexavalent chromium |
| CN102491450A (en) * | 2011-12-15 | 2012-06-13 | 南京大学 | Method for treating dye waste water by using ultraviolet-acetylacetone oxidation treatment process |
| CN102642890A (en) * | 2012-05-09 | 2012-08-22 | 南京大学 | Method utilizing small-molecule diketone to serve as optical active agent for oxidation treatment of dye waste water |
| CN103818986A (en) * | 2014-02-14 | 2014-05-28 | 浙江工商大学 | Photocatalytic electrode responding to visible lights and application thereof on chromium-containing wastewater treatment |
| CN104709996A (en) * | 2015-04-07 | 2015-06-17 | 武汉大学 | Method for simultaneously treating hexavalent chrome wastewater and organic dye wastewater |
| CN105417620A (en) * | 2015-12-18 | 2016-03-23 | 南京大学 | Method for degrading dye wastewater by using sunlight |
Non-Patent Citations (2)
| Title |
|---|
| 何代平: "光催化法处理含Cr(VI)废水的研究", <<应用化工>> * |
| 封享华,等: "铁(III)-丙酮酸盐配合物光解引发水中铬(Ⅵ)还原", <<环境化学>> * |
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| CN106423272B (en) * | 2016-09-28 | 2019-02-26 | 中南林业科技大学 | A kind of load type titania/graphene oxide bead and the preparation method and application thereof |
| CN109956519A (en) * | 2019-04-21 | 2019-07-02 | 贵州大学 | A kind of method that Cr VI and organic phenolic comp ' ds pollution in water removal are removed in photochemistry collaboration |
| CN109956519B (en) * | 2019-04-21 | 2021-11-12 | 贵州大学 | Method for removing hexavalent chromium and organic phenol pollutants in water through photochemical synergy |
| CN110395700A (en) * | 2019-07-29 | 2019-11-01 | 南京大学 | A kind of method of photochemistry preparation nanometer selenium |
| CN112794491A (en) * | 2020-12-10 | 2021-05-14 | 西南兵工重庆环境保护研究所有限公司 | Combined water treatment process for removing hexavalent chromium in wastewater |
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